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harry w gehm
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Handbook of water resources and pollution control
Harry W. Gehm, Jacob I. Bregman · Van Nostrand Reinhold
840 sayfa · 1976
Water-supply engineering / Évacuation / Traitement des déchets / Technique / Kontrolle
State-of-the-art review of pulp and paper waste treatment
Harry W. Gehm · for sale by the Supt. of Docs., U.S. Govt. Print. Off.
252 sayfa · 1973
Water / Wood-pulp industry / Pollution